document.addEventListener("DOMContentLoaded", function() {
    const links = document.querySelectorAll(".sidenav a");
    links.forEach(link => {
        if (link.href === window.location.href) {
            link.style.color = "white"; 
            link.style.backgroundColor = "#BBFFFF";
            link.style.borderRadius = "15px";
        }
    });
});